Improvement in thill-couplings



D. A. JOHNSON.

Thill Coupling. N0. 113,525. Patented April 11, 1871.

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fillnitzt Slain DANIEL A. JOHNSON, OF- BOSTON, MASSACHUSETTS.

Letters Patent No. 113,525, datedApril 11, 1871.'

IMPRQVEMENT -lN THlLL-COUPLINGS.

The-Schedule referred to in these Letters Patent and making partof thesame.

I, DANIELA. J onuson, of Boston, in the county of Suffolk and State ofMassachusetts, have invented certain Improvements in Adjustable Clips,of which the following is a specification.

' Figure 1 is a perspective view of my invention, and

Figure 2, a longitudinal vertical central section. This inventionrelates to that class of carriage-clips which employs elastic packing toprevent rattling of the thill-coupling; and 7 It consists mainly ofcertain devices for adjusting and regulating the pressure of saidpacking, and also of a device for holding the nut of the bolt whichcouples the thill, all of which will be more'fully describedhereinafter.

In the drawing- A represents the yoke of the clip, the forward part ofwhich is provided with a socket, B, in which is l0-- cated a looseplate, 0. 1

D represents the band which surrounds the axle, the ends of which bandpass through the rear portion of the yoke A, and are secured thereto bynuts E.

F F represent lugs projecting from the band D above the socket 13,between which lugs is pivoted the thill G. p

H represents a packing of rubber, which rests in socket B, on the looseplate 0, between lugs F F, and projects upward behind the thill, beingprovided with a concavity which fits the circular end of said thill.

I represents a set-screw, which enters the bottom of socket B and bearsagainst the loose plat'e'O.

J represents a projection on the outer side of the lug F, whichprojection holds the nut K of-the coupling-bolt L and prevents the samefrom turning.

Operation.

other power applied to its head 0, the nut K- being held by projection Juntil the whole is tightly screwed up, when, as will be readily seen,the nut K cannot be turned. v

The rubber packing H is then compressed, by means of the set-screw I andloose plate 0, until it presses'with any desired force against the thillG, thereby preventing any rattling of the latter and forming anoiseless-and secure coupling.

I am aware that rubber packings have been used heretofore incarriageclips; but I know of no arrangement for compressing said packingafter the thill is attached, it being usually necessary to crowd thethill against the packing with great force in order to compress itsufiiciently, thus requiring much physical strength to perform theoperation of coupling the thills. With my device, however, the operationcan be performed by any person with but little exertion, it being onlynecessary-to put the thill in place and compress the rubber by means ofthe screw I, as above mentioned.

The projection J, which looks the bolt-nut K, is of great utility, andsupplies a want long felt in this direction, obviating any difficulty inremoving the bolt I when the thread becomes rusted, and any danger of alosing the nut.

Having thus fullydescribed my invention,

W hat I claim as new, and desire to secure by Letters Patent, is-

The yoke A, constructed as descrined,in combination with packing H, bandD, and lugs F F, screw I, and loose plate 0, substantially as described.

In testimony whereof I have signedmy name to this specification in thepresence of two subscribing witnesses.

DANIEL A. JOHNSON.

Witnesses:

CARROLL D. Wmenr, CHARLES RBRQWN.

